Multisampling value of 1

Setting a multisampling values of 0 or 1 are apparently
2 different cases, so I tried removing the even number
check to fix this. It didn't break any tests, but I'm
not sure how well this is covered by the tests.

Change-Id: I0e7de9b153288f0c07bde9a2f104ea1d2bf230ac
Reviewed-on: https://swiftshader-review.googlesource.com/3622
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
diff --git a/src/OpenGL/libGLESv2/Renderbuffer.cpp b/src/OpenGL/libGLESv2/Renderbuffer.cpp
index 9894e57..9923956 100644
--- a/src/OpenGL/libGLESv2/Renderbuffer.cpp
+++ b/src/OpenGL/libGLESv2/Renderbuffer.cpp
@@ -464,7 +464,7 @@
 	mHeight = height;
 	this->format = format;
 	internalFormat = requestedFormat;
-	mSamples = supportedSamples & ~1;
+	mSamples = supportedSamples;
 }
 
 Colorbuffer::~Colorbuffer()
@@ -542,7 +542,7 @@
 	mHeight = height;
 	format = GL_DEPTH24_STENCIL8_OES;
 	internalFormat = sw::FORMAT_D24S8;
-	mSamples = supportedSamples & ~1;
+	mSamples = supportedSamples;
 }
 
 DepthStencilbuffer::~DepthStencilbuffer()